safe eclipse viewing - star net · safe eclipse viewing august 2nd, 2017. thanks to our sponsors....
TRANSCRIPT
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need microphone capabilities.
Host: Brooks Mitchell, STAR_Net Education Coordinator
Presenter: Dr. Doug Duncan, Astronomer and Director of
the Fiske Planetarium
Safe Eclipse ViewingAugust 2nd, 2017
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Thanks to Our Sponsors
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Join STAR_Net!
Professional development resources,
including webinars, newsletters, blogs,
forums, videos, and much more!
The STEM Activity Clearinghouse
features activities designed
specifically for a library setting
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Reminders• Follow us on Social Media!
• Facebook.com/STARLibraries
• @STARNet_Project
• “Out-of-This-World Activities”, September 13th
• Join STAR_Net and the Lunar and Planetary Institute to
learn tips and tricks from LPI’s Explore program for
engaging children, tweens, and families in space science
with games, activities, and events.
• Registration will open in early August
• Certificate of Attendance via SurveyMonkey Link
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A Note about Eclipse Glasses• In response to reports of potentially unsafe eclipse viewers flooding the market,
American Astronomical Society recently (Aug. 1) updated their advice for safely
viewing the solar eclipse:
• It is no longer sufficient to look for the logo of the International Organization for
Standardization (ISO) and a label indicating that the product meets the ISO
12312-2 international safety standard for filters for direct viewing of the Sun’s
bright face.
• The only way you can be sure your solar viewer is safe is to verify that it comes
from a reputable manufacturer or one of their authorized dealers.
• AAS Solar Eclipse Task Force has compiled a list of vendors at
eclipse.aas.org/resources/solar-filters (link in chat)
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Pinhole Projectors
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Pinhole Projectors
Easy to make
Common materials = low cost
Safe way to view an Eclipse
Great pre-Eclipse activity
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Dr. Doug Duncan• Astronomer at the University of Colorado, where he directs
Fiske Planetarium, the most advanced planetarium in the US
• Part of the project that first found sunspot cycles on other
stars
• Part of the Hubble Space Telescope Staff
• Currently serves on the NASA Advisory Committee Science
Committee
• Recipient of the 2011 Richard Emmons award presented to
the “Outstanding University Astronomy Teacher in the US”
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The Great American Total Eclipse
Watching it Safely
Dr. Doug Duncan – Univ. of Colorado
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I’ve been chasing
eclipses for a long
time, and I’m still
excited!
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Plan for today:
Why is this event so rare?
What will it look like?
How to watch safely– how to help others.
If time – science at eclipses / chasing them
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It has been nearly 40 years
since a TOTAL eclipse came
to the continental US… why
so rare?
The moon is 120
moon diameters
from Earth!
(this is to scale)
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It has been nearly 40 years
since a TOTAL eclipse came
to the continental US… why
so rare?
It’s shadow must
hit the earth to
make an eclipse
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(not to scale)
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Plan for today:
Why is this event so rare?
What will it look like?
How to watch safely– how to help others.
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At partial eclipse locations, slowly,
over more than 2 hours…
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Eugène Atget (1857–1927 Paris): L’Eclipse (1911)
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At even a 90% eclipse it will NOT
get dark!
Still very light out!
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1 2 3 4 5
1 2 4 8 16
Energy
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Today’s important
message: Do NOT think
of this as a 95%
eclipse!
It is a 5% sun-visible
eclipse!
The sun is 400,000
times brighter than
the full moon.
5 % of the sun is
20,000 times brighter
than the full moon.
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Make a “pinhole camera”
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Leaves making “pinhole cameras”
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David Baron, “I thought I knew what to
expect”….[I was so wrong!]
Get this book
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27 year old
Thomas
Edison
observes
the IR…
Maria
Mitchell
organizes
her own
expedition…
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Is this the Grand Canyon?
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If there are mountains in the distance…
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Shadow bands…
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Baily’s beads
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Prominences…
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Totality Tips!
Record a “countdown”
- Start it when totality starts
Use a pair of binoculars for perhaps
half of totality.
Note the “circular sunrise,” Venus,
bright stars…
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The unedited video
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Animals do strange things…
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Jay Anderson 2017 eclipse
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Extra glasses. Fundraiser?
McGuckin (55 s in)
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To show a group the partial phases,
use binocular projection, if you won’t
get distracted (helper?)
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www.colorado.edu/eclipse
www.coursera.org/learn/eclipse
www.starnetlibraries.org/2017eclipse
www.daystarfilters.com
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Reminders• You will be redirected to a SurveyMonkey link after the webinar ends. Complete
the survey and you will be given the link for a Certificate of Attendance
• September 13th – “Out of This World Activities”
• Registration opens early August
• All webinars are recorded and archived on
http://www.starnetlibraries.org/resources/webinars/
• Join starnetlibraries.org and like us on Facebook and Twitter!
• Facebook.com/STARLibraries
• Twitter: @STARNET_Project
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Thank You!